Warnings that many apps will no longer function with my next Mojave update. So I am no longer updating. ????

I unknowingly made the mistake of updating to Mojave 10.14.1 (MacBook Pro Retina 2012). I then had problems with Adobe Photoshop. Now I am getting pop up requests everyday to install a further Mojave update. This along with numerous warnings that if I do so, many apps will no longer function if I continue with this new update. This warning also includes the Microsoft Office apps. This is really a problem. If I continue updating, I will have to spend a fortune on new software if I want to continue using this Mac. Any suggestions? I am sure that there are many others out there with the same problem! My Mac is still functioning perfectly -- no need to purchase a new one, but with this new OS.....